There currently aren't any snapping option controls in Draw.
It is always on.
otoh, you can work around it.
On the contrary, in Draw 3.0, you can turn off snapping for the straight line shape.
01 Tap the shape icon in the top right of the toolbar.
02 Tap the gear icon in the top left of the popover menu that comes up.
There, you should see a "Snapping" setting that you can toggle on and off. You can also set the snapping angles at either 30, 45, or 90 degrees.
Hope that helps,
Updates are good!